Double-bearing type reel

Abstract

The double-bearing type reel has a spool for winding up a fishing line and a drag mechanism 5 slipping to rotate the spool when a predetermined tension acts on the line wound round the spool. The drag mechanism comprises an outer ring, an inner shaft, a plurality of rollers arranged between the outer ring and the inner shaft so as to roll, and a torque adjusting section for moving the outer ring and the inner shaft relatively in an axial direction. The rollers are arranged between tapered roll surfaces which are an inner circumferential surface of the outer ring and an outer circumferential surface of the inner shaft and have center axes inclined against center axes of the outer ring and the inner shaft. The torque adjusting section adjusts slip torque of the outer ring and the inner shaft by pressing the outer ring and the inner shaft so as to move relatively in the axial direction, thereby the outer ring are slipped relatively by a tension exceeding a predetermined value acting on the line wound round the spool to rotate the spool and wind off the line. A circulation passage of lubricating oil is provided between the outer ring and the inner shaft passing through between the rollers and a plurality of through holes formed in the inner shaft. The outer ring has a radiating fin.

What is claimed is:  
     
       1. A double-bearing type reel having a spool for winding up a fishing line and a drag mechanism slipping to rotate said spool when a predetermined tension acts on the line wound round said spool: 
       said drag mechanism comprising an outer ring, and inner shaft, a plurality of rollers arranged between said outer ring and said inner shaft so as to roll, and a torque adjusting section for moving said outer ring and said inner shaft relatively in an axial direction  
       said rollers being arranged between tapered roll surfaces which are an inner circumferential surface of said outer ring and an outer circumferential surface of said inner shaft, having center axes inclined against center axes of said outer ring and said inner shaft;  
       said torque adjusting section adjusting slip torque of said outer ring and said inner shaft by pressing said outer ring and said inner shaft so as to move relatively in the axial direction, thereby said outer ring and said inner shaft being slipped relatively by a tension exceeding a predetermined value acting on said line would round said spool to rotate said spool and wind off said line.  
       wherein a circulation passage of lubricating oil is provided between said outer ring and said inner shaft, said circulation passage including an interspace extending substantially axially between adjacent rollers of said plurality of rollers and communication oil passage connecting two axial ends of said interspace so as to enable flow of the lubricating oil through said interspace.  
     
     
       2. A double-bearing type reel as claimed in  claim 1 , wherein said inner shaft is formed with a plurality of through holes having both ends opened, extending in a direction of a center axis of said inner shaft and arranged circumferentially at regular intervals, so that said lubricating oil circulates through a space between said outer ring and said inner shaft and said through holes. 
     
     
       3. A double-bearing type reel as claimed in  claim 1  or  2 , wherein said outer ring has a radiating fin for cooling said outer ring, thereby thermal expansion of said outer ring is restrained when said line is paid out from said spool and said drag mechanism is heated. 
     
     
       4. A double-bearing type reel as claimed in  claim 3 , wherein said radiating fin is formed by an annular or spiral thin plate having a plurality of cuts disposed in a lengthwise direction. 
     
     
       5. A double-bearing type reel as claimed in  claim 1 , further comprising a lubricating oil housing chamber forming a part of said circulation passage. 
     
     
       6. A double-bearing type reel having a spool for winding up a fishing line and a drag mechanism slipping to rotate said spool when a predetermined tension acts on the line wound round said spool; 
       said drag mechanism comprising an outer ring, an inner shaft, a plurality of rollers arranged between said outer ring and said inner shaft so as to roll, and a torque adjusting section for moving said outer ring and said inner shaft relatively in an axial direction;  
       said rollers being arranged between tapered roll surfaces which are an inner circumferential surface of said outer ring and an outer circumferential surface of said inner shaft, having center axes inclined against center axes of said outer ring and said inner shaft;  
       said torque adjusting section adjusting slip torque of said outer ring and said inner shaft by pressing said outer ring and said inner shaft so as to move relatively in the axial direction, thereby said outer ring and said inner shaft being slipped relatively by a tension exceeding a predetermined value acting on said line wound round said spool to rotate said spool and wind off said line,  
       wherein parting means for parting said outer ring and said inner shaft from each other when said drag mechanism is released is provided.  
     
     
       7. A double-bearing type reel as claimed in  claim 6 , wherein said outer ring is connected to said spool through a connecting ring which rotates integrally with said outer ring and is movable relatively to said outer ring in an axial direction, and said parting means includes spring means for forcing said outer ring so as to part from said connecting ring. 
     
     
       8. A double-bearing type reel as claimed in claims  7 , wherein a plurality of connecting grooves are formed on an outer circumferential surface of said connecting ring, a plurality of connecting grooves are formed on an inner circumferential surface of a connecting cylindrical portion of said outer ring, a steel ball is disposed between each corresponding connecting grooves of said connecting ring and said connecting cylindrical portion to connect said connecting ring and said connecting cylindrical portion so as to rotate integrally with each other, corresponding dent grooves are formed on said outer circumferential surface of said connecting ring and said inner circumferential surface of said connecting cylindrical portion for receiving said spring means, said corresponding dent grooves are adjacent to said corresponding connecting grooves in a circumferential direction. 
     
     
       9. A double-bearing type reel as claimed in  claim 7  or  8 , wherein a casing is fitted over said connecting ring and said outer ring. 
     
     
       10. A double-bearing type reel as claimed in  claim 9 , wherein said casing has a radiating fin for cooling said outer ring, thereby thermal expansion of said outer ring is restrained when said line is paid out from said spool and said drag mechanism is heated. 
     
     
       11. A double-bearing type reel having a spool for winding up a fishing line and a drag mechanism slipping to rotate said spool when a predetermined tension acts on the line would round said spool; 
       said drag mechanism comprising an outer ring, and inner shaft, a plurality of rollers arranged between said outer ring and said inner shaft so as to roll, and a torque adjusting section for moving said outer ring and said inner shaft relatively in an axial direction;  
       said rollers being arranged between tapered roll surfaces which are an inner circumferential surface of said outer ring and an outer circumferential surface of said inner shaft, having center axes inclined against center axes of said outer ring and said inner shaft;  
       said torque adjusting section adjusting slip torque of said outer ring and said inner shaft by pressing said outer ring and said inner shaft so as to move relatively in the axial direction, thereby said outer ring and said inner shaft being slipped relatively by a tension exceeding a predetermined value acting on said line wound round said spool to rotate said spool and wind off said line,  
       wherein said torque adjusting section comprises a drag lever provided outside of a side cover; a screw member fixed to said drag lever penetrating said side cover so as to rotate relatively; a nut member provided inside of said side cover to engage with said screw member; and transmission means for transmitting axial movement of said nut member to said outer ring through a spring means, and said drag lever has a stopper means capable of stopping rotation of said drag lever in a direction to abruptly increase slip torque of said other ring and said inner shaft.  
     
     
       12. A double-bearing type reel as claimed in  claim 11 , wherein said stopper means has a handling section positioned near a handling section of said drag lever, thereby said handling section of said stopper means can be operated concurrently with operation of said drag lever. 
     
     
       13. A double-bearing type reel as claimed in  claim 11  or  12 , wherein said nut member has a gear formed on an outer periphery, and an adjusting shaft member penetrating said side cover has a tip end formed with a gear for engaging with said gear of said nut member, thereby drag load can be corrected by operating said adjusting shaft member from outside of said side cover to adjust axial position of said nut member.